Grip strength trainer



FIG. 1 is a perspective view of a grip strength trainer.

FIG. 2 is a top side view of the grip strength trainer.

FIG. 3 is a bottom side view of the grip strength trainer.

FIG. 4 is a left side view of the grip strength trainer shown top side up with a strap of the grip strength trainer extending towards the viewer.

FIG. 5 is a right side view of the grip strength trainer shown top side up with the strap of the grip strength trainer extending away from the viewer.

FIG. 6 is a front side view of the grip strength trainer shown bottom side up with the strap of the grip strength trainer extending to the left of the viewer.

FIG. 7 is a back side view of the grip strength trainer shown bottom side up with the strap of the grip strength trainer extending to the right of the viewer.

FIG. 8 is a detail view of a corner of the grip strength trainer showing lapel trim and interior fabric with a woven pattern; and,

FIG. 9 is a detail view of logo surface ornamentation disposed over the interior fabric of the grip strength trainer.

The broken lines in the outer lapel of FIGS. 1-3 and 8 indicate stitching and form no part of the claimed design; the broken lines of the strap in FIGS. 1-7 form no part of the claimed design; and the interior broken lines of FIGS. 1-3, 8 and 9 indicate the logo surface ornamentation, and the woven pattern of the interior fabric of the grip strength trainer, and form no part of the claimed design of this Application. 

CLAIM The ornamental design for a grip strength trainer, as shown and described. 